The Multi-Power Battery Pack MB-D10 combines added stability with extended shooting potential and the durability of a magnesium alloy external case with the same level of sealing protection inherent to the D300 & D700 to help protect against moisture and dust. The MB-D10 features a sequential power supply with auto-switching to the battery installed inside the camera body, the MB-D10 also enables high-speed continuous shooting at a rate of 8 fps for up to 100 consecutive shots.